1.	Simplify 1 Simplify the following expression: $$ \left(-3 - 4 + 2\times5\right)2(-2)5 $$ Correct Answer $$ -60$$ or -60.0000

2.	Simplify 2 Simplify the following expression: $$ \left(-5\times2 + \frac{5}{2}\right)2(-(-1)) $$ Correct Answer $$ -15$$ or -15.0000

3.	Fractions 1 Simplify the following expression: $$ \frac{3}{2} + \frac{3}{4} $$ Correct Answer $$ \frac{9}{4}$$ or 2.25

4.	Fractions 2 Simplify the following expression: $$ \frac{-1}{5}\frac{1}{2} $$ Correct Answer $$ \frac{-1}{10}$$ or -0.1

5.	Significant figures 1. Write the following to 3 significant figures: 12080.319 Correct Answer 12100 or $$1.21\times10^{4}$$ 2. Write the following to 3 significant figures: 500.62674 Correct Answer 501 or $$5.01\times10^{2}$$

6.	Standard Form 1. Write the following in standard form to 5 significant digits: 0.0000932869 Correct Answer $$9.3287\times10^{-5}$$ 2. Write the following in standard form to 5 significant digits: 0.0000000769144 Correct Answer $$7.6914\times10^{-8}$$

7.	Significant figures 1. Write the following in preferred standard form to 3 significant digits: 1.380 Correct Answer $$1.38\times10^{0}$$ 2. Write the following in preferred standard form to 2 significant digits: 46820 Correct Answer $$47\times10^{3}$$

8.	Simplify 2 Simplify the following expression: $$ \frac{2(-2)(-1)}{\frac{5}{2} - 2\times3} $$ Correct Answer $$ \frac{-8}{7}$$ or -1.14286

9.	Simplify 1 Simplify the following expression: $$ 2\times3\times3 - \left(-1 + 4 + 6 - 3\right) $$ Correct Answer $$ 12$$ or 12.0000

10.	Simplify 2 Simplify the following expression: $$ 2\left(2 - 1\right) - \left(4 + 5\right)\left(6 + 4\right) $$ Correct Answer $$ -88$$ or -88.0000